4.5.2通气管的设置SettingofAVentPip31课件讲解

4.5.2通气管的设置SettingofAVentPipe通气管的设置SettingofAVentPipe1.伸顶通气管的设置SettingofAStackVent（1）设置条件SettingConditions生活排水管道的立管顶端应设置伸顶通气管。当伸顶通气管无法伸出屋面时，宜设置侧墙通气，且通气管口不宜设在建筑物挑出部分的下面。Fordomesticdrainagepipes,astackventpipeshallbeprovidedatthetopoftheverticalpipe.Whenthestackventpipecannotextendoutoftheroof,itisadvisabletosetupasidewallforventilation,andtheventpipeorificeshallnotbelocatedundertheprojectingpartofbuildings.通气管的设置SettingofAVentPipe（2）设置要求SettingRequirements1通气管高出屋面不得小于0.3m，且应大于最大积雪厚度，通气管顶端应装设风帽或网罩；Theventpipeshallnotbelessthan0.3metershigherthantheroofandshallbehigherthanthemaximumsnowthickness.Ahoodornetcovershallbeinstalledatthetopoftheventpipe;2在通气管口周围4m以内有门窗时，通气管口应高出窗顶0.6m或引向无门窗一侧；Whentherearedoorsorwindowswithin4metersaroundtheventpipeorifice,theventpipeorificeshallbe0.6metershigherthanthetopofthewindowsorextendtothesidewithoutdoorsorwindows;3在经常有人停留的平屋面上，通气管口应高出屋面2m；Foraflatroofwherepeopleoftenstay,theventpipeorificeshallbe2metersabovetheroof;4当伸顶通气管为金属管材时，应根据防雷要求设置防雷装置。Ifthestackventpipeismadeupofmetal,lightningprotectiondevicesshallbeprovidedaccordingtothelightningprotectionrequirements.通气管的设置SettingofAVentPipe2.主通气管、副通气立管的设置SettingsofMainVentPipesandSecondaryVentStacks（1）设置条件SettingConditions建筑物内的排水管道上设有环形通气管时，应设置连接各环形通气管的主通气立管或副通气立管。Whereloopventpipesareprovidedonthedrainagepipeswithinabuilding,eitheramainorsecondaryverticalventpipeshallbeprovidedconnectingeachloopventpipe.通气立管不得接纳器具污水、废水和雨水，不得与风道和烟道连接。Verticalventpipesshallnotreceivesewage,wastewaterandrainwaterfromwares,andshallnotbeconnectedwithairductsandflues.（2）通气立管与排水立管的连接ConnectionofVentStacksandDrainageVerticalPipes专用通气立管和主通气立管的上端可在最高层卫生器具上边缘0.15m或检查口以上与排水立管通气部分以斜三通连接，下端应在最低排水横支管以下与排水立管以斜三通连接；或者下端应在排水立管底部距排水立管底部下游侧10倍立管直径长度距离范围内与横干管或排出管以斜三通连接。Theupperendofthespecificventstacksandmainventstackscanbeconnectedwiththeventilatingpartofthedrainageverticalpipethroughalateralteeat0.15metersabovetheupperedgeofsanitarywareonthehighestfloororabovetheinspectionaccess,whilethelowerendshallbeconnectedwiththedrainageverticalpipethroughalateralteebelowthelowesthorizontaldrainagebranchpipe.Alternatively,thelowerendshallbeconnectedwithahorizontalmainpipeordischargepipethroughalateralteewithinadistanceof10timesthediameterofthestackfromthebottomofthedrainageverticalpipetoitsdownstreamside.通气管的设置SettingofAVentPipe3.结合通气管YokeVentPipe1结合通气管宜每层或隔层与专用通气立管、排水立管连接，与主通气立管连接；结合通气管下端宜在排水横支管以下与排水立管以斜三通连接，上端可在卫生器具上边缘0.15m处与通气立管以斜三通连接；Theyokeventpipeshallbeconnectedwiththespecificventstack,drainageverticalpipe,andthemainventstackoneachfloororeveryotherfloor.Itslowerendshallbeconnectedwiththedrainageverticalpipethroughalateralteebelowthehorizontaldrainagebranchpipe,anditsupperendcanbeconnectedwiththeventstackthroughalateralteeat0.15metersfromtheupperedgeofsanitaryware;2当采用H管件替代结合通气管时，其下端宜在排水横支管以上与排水立管连接；WhenanH-shapedpipefittingisusedtoreplacetheyokeventpipe,itslowerendshallbeconnectedwiththeverticaldrainagepipeabovethehorizontaldrainagebranchpipe;3当污水立管与废水立管合用一根通气立管时，结合通气管配件可隔层分别与污水立管和废水立管连接；通气立管底部分别以斜三通与污废水立管连接。Whentheverticalsewagepipeandverticalwastewaterpipeshareoneverticalventilatingpipe,theyokeventpipefittingscanbeconnectedwiththeverticalsewagepipeandverticalwastewaterpiperespectivelyeveryotherfloor.Thebottomoftheverticalventilatingpipeisconnectedtotheverticalsewagepipeandverticalwastewaterpipethroughlateralteesrespectively.通气管的设置SettingofAVentPipe通气管的设置SettingofAVentPipe4.环形通气管LoopVentPipe设置条件SettingConditions连接4个及4个以上卫生器具并与立管的距离大于12m的排水横支管；Horizontaldrainagebranchpipeswithfourormoresanitarywaresandadistancegreaterthan12metersfromastack;1连接6个及6个以上大便器的污水横支管；Asewagetransversebranchpipewithsixormoretoiletbowls;2设有器具通气管的排水管道上。Drainagepipelineswithfixtureventpipes.3通气管的设置SettingofAVentPipe5.器具通气管FixtureVentPipes（1）设置条件SettingConditions对卫生、安静要求较高的建筑物内，生活污水宜设置器具通气管。Inbuildingswithhighrequirementsforhygieneandquietness,fixtureventpipesshallbesetupfordischargingdomesticsewage.（2）设置要求SettingRequirements器具通气管应设在存水弯出口端；在横支管上设环形通气管时，应在其最始端的两个卫生器具之间接出，并应在排水支管中心线以上与排水支管呈垂直或45°连接；Thefixtureventpipeshouldbesetattheoutletendofthetrap;whenaloopventpipeissetonthehorizontalbranchpipe,itshallbeconnectedbetweenthetwosanitarywaresatitsstartingendanditshallbeconnectedwiththedrainagebranchpipeinaverticalor45-degreeconnectionabovethecenterlineofthedrainagebranchpipe;器具通气管、环形通气管应在最高层卫生器具上边缘0.15m或检查口以上，按不小于0.01的上升坡度敷设与通气立管连接。Fixtureven